/*
 * TransactionTagCounter.h
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2013-2024 Apple Inc. and the FoundationDB project authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include "fdbclient/PImpl.h"
#include "fdbclient/StorageServerInterface.h"
#include "fdbclient/TagThrottle.actor.h"

class TransactionTagCounter {
	PImpl<class TransactionTagCounterImpl> impl;

public:
	TransactionTagCounter(UID thisServerID, int maxTagsTracked, double minRateTracked);
	~TransactionTagCounter();

	// Update counters tracking the busyness of each tag in the current interval
	void addRequest(Optional<TagSet> const& tags, int64_t bytes);

	// Save current set of busy tags and reset counters for next interval
	void startNewInterval();

	// Returns the set of busiest tags as of the end of the last interval
	std::vector<BusyTagInfo> const& getBusiestTags() const;
};
